[artist id="2408193"]Miley Cyrus[/artist] and Liam Hemsworth didn't share their onscreen/offscreen chemistry from the get-go. Cyrus says that when they first started shooting their movie "The Last Song" last summer, she wasn't sure how Hemsworth felt about her.

In an interview with Ellen DeGeneres set to air on "Ellen" next Wednesday, Cyrus, who also appeared on "American Idol" this week, explains that when she first met Hemsworth, she had no intention of dating him, or anyone else for that matter. "I was actually going through a tough time. I was like, guys just need to be out of my life for a little while," she explained. "[I thought] 'I just need to alone.'

"I kind of just wanted to focus on my work. I tend to hide behind my work sometimes," she says of how she felt at the time. But there was something about Hemsworth that made her change her mind. "But I met him, and he opened the door for me, and I was like, I have been in L.A. for three years and I don't think any guy has actually opened the door for me. It wasn't that he wanted the job. That's just who he is. I was like, 'Wow, that is super-impressive.' I actually turned to the director and said, 'He's got the job.' He's hot and he opened the door. Excellent."

The attraction was there for Cyrus, but she wasn't sure they could make it work. "We started filming and at one point the chemistry was kind of awkward. ... I liked him a little bit, he liked me a little bit, but it was awkward," she said. "Then I was like, 'OK, just fake it.' [I said] 'Please just pretend you like me' and he was like 'I don't have to pretend. I really do like you.' [Then it was like] 'OK, you're going to be my boyfriend. Cool.' "

So, how good are things for the pair now? Apparently pretty great. "We've been together for 10 months now and I'm really happy," she said. "I like him more now than I did [before] because we know more about each other."